Homework Helpers by Phil Medina

Author:Phil Medina
Language: eng
Format: epub
ISBN: 9781601638496
Publisher: Red Wheel Weiser

Lesson 6–2 Review

If a sample contains 50 g of carbon-14 and 50 g of nitrogen-14, how many half-lives has it undergone? a) 1

b) 2

c) 3

d) 4

If a sample contains 25 g of carbon-14 and 75 g of nitrogen-14, how many half-lives has it undergone? a) 1

b) 2

c) 3

d) 4

If a sample contains 25 g of carbon-14 and 175 g of nitrogen-14, how many half-lives has it undergone? a) 1

b) 2

c) 3

d) 4

How old is a bone in which the carbon-14 in it has undergone 3 half-lives? a) 5,700 years

b) 11,400 years

c) 17,100 years

d) 22,800 years

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